植物生命活动调节的基本形式是 ；人和高等动物生命活动的调节有 和体液调节两种形式。
Look! That fellow is too sleepy to work. He ______ up reading until midnight.
According to Lee, it was Ben’s carelessness that _______ the accident. But Ben _______ his wrong doing.
Even though they are not doubtful at all _______ John will pass the exam, I still wonder ______ he is fully prepared.
Tim is always lying, thus no one will believe _______ he says.
______ the scene, he couldn’t help thinking of the description in a book ____ by a British novelist.
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